It’s a big moment when a baby loses her first tooth—and some parents want to make that memory last forever by turning the tooth into jewelry.

In one of the more creative accessories trends we’ve seen in a while, some parents are having their babies’ lost molar teeth cast in sterling silver and made into necklace pendants.

“Moms are always on the look-out for unique and personal mementos to remember the key milestones in their child’s life,” Linda Murray from the parenting website BabyCenter.com told ABC News. “Losing a tooth is a pivotal moment in a child’s development and symbolic of crossing the threshold from baby to big kid. It’s not too surprising that parents want to preserve the teeth in some form.”